Oxy-Gas burners for cold-metal open hearths

The installation and operation of oxy-gas burners in two tilting, acid open-hearth furnaces at Standard Steel Div. are described. The results of over 800 heats from two systems—in one furnace three burners are positioned over doors and in the other four burners are centered between doors—are given and compared. Firing rates and oxy-gas ratios for both installations are reported and evaluated. Increased production rates of 22–27%, decreased Btu input of 12%, and decreased costs of 13% are indicated.